Kern OKM 173 Trinocular Metallurgical Polarization Tool

Description

Document automotive metallurgy fatigue cracks and machine part wear using the Kern OKM 173 Metallurgical Microscope. Powered by an infinity-corrected IOS optical system, it delivers 50x, 100x, 200x, and 400x magnification via four Long Working Distance (LWD) Plan Achromatic objectives: 5x/0.13, 10x/0.25, 20x/0.40, and 40x/0.60. An integrated vertical photo tube port incorporates a standard 100:0 / 0:100 optical beam splitter, directing 100% of light to an external digital camera sensor for crisp, high-resolution documentation without optical loss.

Reflected surface illumination is supplied by an internal 6V/30W halogen module fitted with integrated field and aperture diaphragms for glare-free Köhler contrast on reflective alloys. The 30-degree inclined trinocular head carries paired widefield WF 10x/18 mm eyepieces across an adjustable interpupillary range. The oversized 200 x 140 mm double-layer mechanical stage provides 76 x 50 mm of coaxial XY travel, backed by concentric coarse and fine focus knobs with 2-micron graduations across an 8.5 kg cast chassis (250 x 200 x 460 mm) running on universal 100-240V AC power.

Key Features of Kern OKM 173 Metallurgical Microscope

An upright trinocular metallurgical and polarization material inspection microscope featuring 30W halogen epi-illumination and LWD infinity optics. Combines 50x to 400x magnification with reflected Köhler lighting, slide-in polarization filters, a 200 x 140 mm stage, and a 100:0 / 0:100 camera port.

• Infinity Plan Achromatic LWD objectives: 5x, 10x, 20x, and 40x for opaque surfaces
• Integrated 6V/30W halogen epi-illumination module with field and aperture diaphragms
• Top-mounted vertical photo tube port with selectable 100:0 / 0:100 optical beam splitter
• Includes slide-in polarizer and analyzer filter blocks for surface polarization checks
• Oversized 200 x 140 mm double-layer mechanical stage with 76 x 50 mm coaxial XY drive
• Concentric coaxial coarse and fine focus drive with calibrated 2-micrometer division markings
• Widefield WF 10x/18 mm eyepieces calibrated for structural metrology alignment logs
• Solid 8.5 kg cast-metal chassis provides complete vibration-free benchtop stability

Reflected 30W Halogen Köhler Lighting & LWD Plan Optics

Opaque mineral sections, semiconductor packages, and polished metallurgical mounts reflect light back through the objective lens, requiring intense incident illumination. The 30W quartz halogen lamp house floods the specimen plane with a warm continuous spectrum that brings out true grain boundaries and etching contrast. Built-in aperture and field diaphragms allow operators to eliminate internal barrel reflections and dial in optimal optical resolution on shiny alloys.

Mechanical Stage Scanning & 100% Light Path Splitting

The 200 x 140 mm mechanical stage provides smooth 76 x 50 mm coordinate translation via right-hand drop-down stalks, letting technicians scan metallurgical pucks systematically without touching specimen surfaces. Toggling the photo port lever directs 100% of light to your digital C-mount camera, delivering maximum photon throughput to the sensor for high-speed video capture and low-noise defect documentation.

• Köhler illumination diaphragms eliminate stray reflections on polished metal faces
• Selectable beam splitter allows 100% light transfer to digital cameras for low-noise capture
• Slide-in polarizer and analyzer kit allows rapid evaluation of anisotropic surface inclusions

Kern & Sohn Three-Year Laboratory Warranty

Kern & Sohn backs the OKM 173 with a comprehensive three-year factory warranty covering optical elements, stand castings, and mechanical stage drives, backed by two years on electrical halogen circuitry. The complete package contains the OKM 173 trinocular industrial stand, four metallurgical Infinity Plan objectives, pair of WF 10x/18 mm eyepieces, slide-in polarizer and analyzer blocks, power adapter, dust cover, and manual.